28506855

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^2$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 51539040

約数和(自身を除く): 23032185

約数列:

[1, 3, 5, 13, 15, 29, 39, 65, 71, 87, 145, 195, 213, 355, 377, 435, 923, 1065, 1131, 1885, 2059, 2769, 4615, 5041, 5655, 6177, 10295, 13845, 15123, 25205, 26767, 30885, 65533, 75615, 80301, 133835, 146189, 196599, 327665, 401505, 438567, 730945, 982995, 1900457, 2192835, 5701371, 9502285, 28506855]

約数ペア:

[(1, 28506855), (3, 9502285), (5, 5701371), (13, 2192835), (15, 1900457), (29, 982995), (39, 730945), (65, 438567), (71, 401505), (87, 327665), (145, 196599), (195, 146189), (213, 133835), (355, 80301), (377, 75615), (435, 65533), (923, 30885), (1065, 26767), (1131, 25205), (1885, 15123), (2059, 13845), (2769, 10295), (4615, 6177), (5041, 5655)]